ALSA: hda - Merge Realtek parser code to generic parser

Finally the whole generic parser code in Realtek driver is moved into
hda_generic.c so that it can be used for generic codec driver.
The old dumb generic driver is replaced.  Yay.

The future plan is to adapt this generic parser for other codecs,
i.e. the codec driver calls the exported functions in generic driver
but adds some codec-specific fixes and setups.

As of this commit, the complete driver code is still duplicated in
Realtek codec driver.  The big code reduction will come from now on.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_generic.h

+/*
+ * Generic BIOS auto-parser helper functions for HD-audio
+ *
+ * Copyright (c) 2012 Takashi Iwai <tiwai@suse.de>
+ *
+ * This driver is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __SOUND_HDA_GENERIC_H
+#define __SOUND_HDA_GENERIC_H
+
+/* unsol event tags */
+enum {
+	HDA_GEN_HP_EVENT, HDA_GEN_FRONT_EVENT, HDA_GEN_MIC_EVENT,
+	HDA_GEN_LAST_EVENT = HDA_GEN_MIC_EVENT
+};
+
+/* table entry for multi-io paths */
+struct hda_multi_io {
+	hda_nid_t pin;		/* multi-io widget pin NID */
+	hda_nid_t dac;		/* DAC to be connected */
+	unsigned int ctl_in;	/* cached input-pin control value */
+};
+
+/* Widget connection path
+ *
+ * For output, stored in the order of DAC -> ... -> pin,
+ * for input, pin -> ... -> ADC.
+ *
+ * idx[i] contains the source index number to select on of the widget path[i];
+ * e.g. idx[1] is the index of the DAC (path[0]) selected by path[1] widget
+ * multi[] indicates whether it's a selector widget with multi-connectors
+ * (i.e. the connection selection is mandatory)
+ * vol_ctl and mute_ctl contains the NIDs for the assigned mixers
+ */
+
+#define MAX_NID_PATH_DEPTH	5
+
+enum {
+	NID_PATH_VOL_CTL,
+	NID_PATH_MUTE_CTL,
+	NID_PATH_BOOST_CTL,
+	NID_PATH_NUM_CTLS
+};
+
+struct nid_path {
+	int depth;
+	hda_nid_t path[MAX_NID_PATH_DEPTH];
+	unsigned char idx[MAX_NID_PATH_DEPTH];
+	unsigned char multi[MAX_NID_PATH_DEPTH];
+	unsigned int ctls[NID_PATH_NUM_CTLS]; /* NID_PATH_XXX_CTL */
+	bool active;
+};
+
+/* mic/line-in auto switching entry */
+
+#define MAX_AUTO_MIC_PINS	3
+
+struct automic_entry {
+	hda_nid_t pin;		/* pin */
+	int idx;		/* imux index, -1 = invalid */
+	unsigned int attr;	/* pin attribute (INPUT_PIN_ATTR_*) */
+};
+
+struct hda_gen_spec {
+	char stream_name_analog[32];	/* analog PCM stream */
+	const struct hda_pcm_stream *stream_analog_playback;
+	const struct hda_pcm_stream *stream_analog_capture;
+	const struct hda_pcm_stream *stream_analog_alt_playback;
+	const struct hda_pcm_stream *stream_analog_alt_capture;
+
+	char stream_name_digital[32];	/* digital PCM stream */
+	const struct hda_pcm_stream *stream_digital_playback;
+	const struct hda_pcm_stream *stream_digital_capture;
+
+	/* playback */
+	struct hda_multi_out multiout;	/* playback set-up
+					 * max_channels, dacs must be set
+					 * dig_out_nid and hp_nid are optional
+					 */
+	hda_nid_t alt_dac_nid;
+	hda_nid_t slave_dig_outs[3];	/* optional - for auto-parsing */
+	int dig_out_type;
+
+	/* capture */
+	unsigned int num_adc_nids;
+	hda_nid_t adc_nids[AUTO_CFG_MAX_OUTS];
+	hda_nid_t dig_in_nid;		/* digital-in NID; optional */
+	hda_nid_t mixer_nid;		/* analog-mixer NID */
+
+	/* capture setup for dynamic dual-adc switch */
+	hda_nid_t cur_adc;
+	unsigned int cur_adc_stream_tag;
+	unsigned int cur_adc_format;
+
+	/* capture source */
+	struct hda_input_mux input_mux;
+	unsigned int cur_mux[3];
+
+	/* channel model */
+	const struct hda_channel_mode *channel_mode;
+	int num_channel_mode;
+	int const_channel_count;	/* min. channel count (for speakers) */
+	int ext_channel_count;		/* current channel count for multi-io */
+
+	/* PCM information */
+	struct hda_pcm pcm_rec[3];	/* used in build_pcms() */
+
+	/* dynamic controls, init_verbs and input_mux */
+	struct auto_pin_cfg autocfg;
+	struct snd_array kctls;
+	hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
+	hda_nid_t imux_pins[HDA_MAX_NUM_INPUTS];
+	unsigned int dyn_adc_idx[HDA_MAX_NUM_INPUTS];
+	hda_nid_t shared_mic_vref_pin;
+
+	/* DAC list */
+	int num_all_dacs;
+	hda_nid_t all_dacs[16];
+
+	/* path list */
+	struct snd_array paths;
+
+	/* auto-mic stuff */
+	int am_num_entries;
+	struct automic_entry am_entry[MAX_AUTO_MIC_PINS];
+
+	/* for pin sensing */
+	unsigned int hp_jack_present:1;
+	unsigned int line_jack_present:1;
+	unsigned int master_mute:1;
+	unsigned int auto_mic:1;
+	unsigned int automute_speaker:1; /* automute speaker outputs */
+	unsigned int automute_lo:1; /* automute LO outputs */
+	unsigned int detect_hp:1;	/* Headphone detection enabled */
+	unsigned int detect_lo:1;	/* Line-out detection enabled */
+	unsigned int automute_speaker_possible:1; /* there are speakers and either LO or HP */
+	unsigned int automute_lo_possible:1;	  /* there are line outs and HP */
+	unsigned int keep_vref_in_automute:1; /* Don't clear VREF in automute */
+	unsigned int line_in_auto_switch:1; /* allow line-in auto switch */
+
+	/* other flags */
+	unsigned int need_dac_fix:1; /* need to limit DACs for multi channels */
+	unsigned int no_analog:1; /* digital I/O only */
+	unsigned int dyn_adc_switch:1; /* switch ADCs (for ALC275) */
+	unsigned int shared_mic_hp:1; /* HP/Mic-in sharing */
+	unsigned int no_primary_hp:1; /* Don't prefer HP pins to speaker pins */
+	unsigned int multi_cap_vol:1; /* allow multiple capture xxx volumes */
+	unsigned int inv_dmic_split:1; /* inverted dmic w/a for conexant */
+
+	unsigned int parse_flags; /* passed to snd_hda_parse_pin_defcfg() */
+
+	/* for virtual master */
+	hda_nid_t vmaster_nid;
+	struct hda_vmaster_mute_hook vmaster_mute;
+#ifdef CONFIG_PM
+	struct hda_loopback_check loopback;
+	int num_loopbacks;
+	struct hda_amp_list loopback_list[8];
+#endif
+
+	/* multi-io */
+	int multi_ios;
+	struct hda_multi_io multi_io[4];
+
+	/* bind volumes */
+	struct snd_array bind_ctls;
+
+	/* hooks */
+	void (*init_hook)(struct hda_codec *codec);
+	void (*automute_hook)(struct hda_codec *codec);
+	void (*cap_sync_hook)(struct hda_codec *codec);
+};
+
+int snd_hda_gen_spec_init(struct hda_gen_spec *spec);
+void snd_hda_gen_spec_free(struct hda_gen_spec *spec);
+
+int snd_hda_gen_init(struct hda_codec *codec);
+
+struct nid_path *snd_hda_get_nid_path(struct hda_codec *codec,
+				      hda_nid_t from_nid, hda_nid_t to_nid);
+bool snd_hda_parse_nid_path(struct hda_codec *codec, hda_nid_t from_nid,
+			    hda_nid_t to_nid, int with_aa_mix,
+			    struct nid_path *path);
+struct nid_path *
+snd_hda_add_new_path(struct hda_codec *codec, hda_nid_t from_nid,
+		     hda_nid_t to_nid, int with_aa_mix);
+void snd_hda_activate_path(struct hda_codec *codec, struct nid_path *path,
+			   bool enable, bool add_aamix);
+
+int snd_hda_gen_parse_auto_config(struct hda_codec *codec,
+				  const hda_nid_t *ignore_nids);
+int snd_hda_gen_build_controls(struct hda_codec *codec);
+int snd_hda_gen_build_pcms(struct hda_codec *codec);
+
+#endif /* __SOUND_HDA_GENERIC_H */